Roundabouts Database

28782 Results

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City, State
County
Country 		Intersection
(Lat, Lng) 		Type
Status 		Control Type / Other Control Type Approaches / Driveways / ICD (m) Functional Class /
LaneType 		Year Completed Comments
Woodbridge, VA
Prince William Co.
United States 		Mays Quarter Rd. / Dorset Dr. / Weejun Loop
(38.68551, -77.34407) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.3589 		Other (At-Grade)
Single-Lane 		2014 ICD estimated from Google Maps linework.
Citrus Heights, CA
Sacramento Co.
United States 		Stock Ranch Rd. / Woodside Dr. / Fountain Square Dr.
(38.68438, -121.29649) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
38.1000 		Other (At-Grade)
Single-Lane 		2004 Bike lanes striped within circulatory roadway. Year Completed estimated (2003-2004).
Woodbridge, VA
Prince William Co.
United States 		Greatbridge Rd. / Mays Quarter Rd.
(38.68304, -77.34802) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
44.7509 		Other (At-Grade)
Single-Lane 		1998 Year Completed estimated (1994-2002). ICD estimated from Google Maps linework.
Almendralejo, Estremadura
Badajoz
Spain 		N-630 / Calle de Santa Marta
(38.68229, -6.39858) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane, unspecified)
Sacramento, CA
Sacramento Co.
United States 		Northborough Dr. / Heritage Park Ln. / Rose Arbor Dr.
(38.68221, -121.51550) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
23.3081 		Other (At-Grade)
Single-Lane 		2002 ICD estimated from Google Maps linework.
Madison, CA
Yolo Co.
United States 		SR 16 / CR 89
(38.68204, -121.96678) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane 		2019
Piedade, Setúbal
Almada
Portugal 		Avenida Dom Nuno Álvares Pereira / Avenida Bento Gonçalves / Rua Direita / Rua Caetano Maria Batalha
(38.67617, -9.16488) 		Roundabout
Existing 		All-Way Yield
At-grade Rail Crossing Signals/Gates (controlling circulatory roadway only) 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane, unspecified) 		Pedestrian signals and signals for light rail crossing through central island.
North Highlands, CA
Sacramento Co.
United States 		Freedom Park Dr. / 32nd St.
(38.67592, -121.39216) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2012
North Highlands, CA
Sacramento Co.
United States 		Freedom Park Dr. / 34th St. / Dudley Blvd.
(38.67588, -121.38752) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2012
Almendralejo, Estremadura
Badajoz
Spain 		N-630 / Calle Ortega y Muñoz / Calle las Encinas
(38.67584, -6.39247) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
1 Driveways
 Other (At-Grade)
Multilane (2 Lane, unspecified)
Chesterfield, MO
St. Louis Co.
United States 		N Outer 40 Rd. / I-64 WB Exit Ramp
(38.67582, -90.65115) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
42.6720 		Freeway Ramps (Grade-Separated)
Single-Lane 		2010 Year Completed estimated (2009-2010).
Georgetown, DE
Sussex Co.
United States 		S Bedford St. / Arrow Safety Rd.
(38.67394, -75.37738) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2023 There's a short video of a truck going around this roundabout posted on Sept 1 at https://www.facebook.com/delawaredot/ This roundabout currently has three legs, but a fourth will be added some time in the future.
Fountain, CO
El Paso Co.
United States 		Santa Fe Ave. / S Charter Oak Ranch Rd.
(38.67148, -104.71481) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Single-Lane 		2023 Painted splitter island on west leg. https://www.codot.gov/news/2023/may/mamsip-charter-oak-ranch-road-completed
Lavradio, Setúbal
Barreiro
Portugal 		Avenida das Nacionalizações / Rua Dom José Cárcomo Lobo / Rua do Quinto Terceiro
(38.67105, -9.05191) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Almendralejo, Estremadura
Badajoz
Spain 		N-630
(38.67082, -6.38770) 		Roundabout
Existing 		All-Way Yield
Unknown 		2 Approaches
2 Driveways
 Other (At-Grade)
Multilane (2 Lane, unspecified) 		Concentric circulatory roadway striping.
Trafaria, Setúbal
Almada
Portugal 		Estrada EN377-1 / Caminho da Raposeira / Rua Primeiro de Maio
(38.66967, -9.23341) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Woodland, CA
Yolo Co.
United States 		Gum Ave. / Bourn Dr.
(38.66820, -121.74710) 		Roundabout
Removed 		All-Way Yield
None 		4 Approaches
0 Driveways
64.3428 		Other (At-Grade)
Single-Lane 		2008 Built as temporary in 2002. Temporary removed in 2008 and converted to AWSC. Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Barreiro, Setúbal
Barreiro
Portugal 		Avenida das Nacionalizações / Rua do Industrial Alfredo da Silva / Rua da Indústria
(38.66715, -9.05662) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane, unspecified)
Lavradio, Setúbal
Barreiro
Portugal 		Avenida das Nacionalizações / Rua dos Resistentes Antifascistas / Rua Doutor Miguel Bombarda
(38.66506, -9.05575) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane, unspecified)
Chesterfield, MO
St. Louis Co.
United States 		Faust Park / (parking)
(38.66416, -90.54198) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Almendralejo, Estremadura
Badajoz
Spain 		N-630 / EX-359 / E-803 SB On-Ramp
(38.66395, -6.38084) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
 Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		Concentric circulatory roadway striping.
Trafaria, Setúbal
Almada
Portugal 		Avenida Torrado Da Silva / Estrada IC20 Acessos
(38.66354, -9.19104) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
 Other (At-Grade)
Multilane (3+ Lane)
Luray, VA
Page Co.
United States 		W Main St. / Northcott Dr.
(38.66285, -78.47863) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2022 https://www.virginiadot.org/projects/staunton/page_county_8211_route_211-340,_west_main_street,_northcott_drive_8211_roundabout_and_intersection_improvements.asp
Barreiro, Setúbal
Barreiro
Portugal 		Via Rápida do Barreiro [Avenida das Nacionalizações / Avenida José Gomes Ferreira / Alameda Ary dos Santos]
(38.66195, -9.05462) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane, unspecified)
Chesterfield, MO
St. Louis Co.
United States 		Nooning Tree Dr. / Brightfield Manor Dr.
(38.66192, -90.53998) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
33.5280 		Other (At-Grade)
Single-Lane 		2000 Year Completed estimated (1996-2002).
Woodland, CA
Yolo Co.
United States 		Harry Lorenzo Ave. / Patriot Way
(38.65914, -121.74722) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
13.9893 		Other (At-Grade)
Single-Lane 		2018 ICD estimated from Google Maps linework.
Sacramento, CA
Sacramento Co.
United States 		New Market Dr. / Town Center Dr.
(38.65823, -121.52205) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
57.9120 		Other (At-Grade)
Single-Lane 		2002 Bike lane around circulatory roadway. East leg added 2019-2020.
Millsboro, DE
Sussex Co.
United States 		Thomas Jefferson Ave. / Martin Van Buren Dr.
(38.65661, -75.23751) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
University City, MO
St. Louis Co.
United States 		Delmar Blvd. / Trinity Ave.
(38.65653, -90.31072) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
31.7103 		Other (At-Grade)
Single-Lane 		2015 Installed as temporary roundabout ~2013. Made permanent 2015. ICD estimated from Google Maps linework.
Woodbridge, VA
Prince William Co.
United States 		Belmont Bay Dr. / Palisades St.
(38.65612, -77.23753) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
35.4412 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2000 ICD estimated from Google Maps linework.
Sobreda, Setúbal
Almada
Portugal 		Estrada de Vale Mourelos [Via 6 / Rua Bernardim Machado]
(38.65558, -9.18847) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane, unspecified)
Woodland, CA
Yolo Co.
United States 		Harry Lorenzo Ave. / Farmers Central Rd.
(38.65541, -121.74725) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
28.9128 		Other (At-Grade)
Single-Lane 		2016 ICD estimated from Google Maps linework.
Washington, IN
Daviess Co.
United States 		2464 E National Hwy. / Industrial Park Dr. / Gateway Dr. (LTG Tony Jones Dr.)
(38.65527, -87.13563) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
47.2440 		Other (At-Grade)
Single-Lane 		2015 Year Completed estimated (2013-2016).
Holts Summit, MO
Callaway Co.
United States 		MO OO (E Simon Blvd.) / US 54 EB Ramps
(38.65479, -92.11091) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Freeway Ramps (Grade-Separated)
Single-Lane 		2023 Raindrop shaped. https://www.modot.org/node/29043
Woodbridge, VA
Prince William Co.
United States 		Belmont Bay Dr. / Course View Way
(38.65403, -77.23640) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.1826 		Other (At-Grade)
Single-Lane 		2000 ICD estimated from Google Maps linework.
Georgetown, DE
Sussex Co.
United States 		Zoar Rd. / Bethesda Rd. / Speedway Rd.
(38.65384, -75.36140) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
41.9711 		Other (At-Grade)
Single-Lane 		2017 Replaced two closely spaced TWSC intersections. ICD estimated from Google Maps linework.
Sacramento, CA
Sacramento Co.
United States 		Blackrock Dr. / N Breezy Meadow Dr.
(38.65328, -121.49509) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
38.1000 		Other (At-Grade)
Single-Lane 		2016
Woodland, CA
Yolo Co.
United States 		Campos Ave. / Ortiz Ave.
(38.65290, -121.73120) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
30.7792 		Other (At-Grade)
Single-Lane 		2007 Functional Class: Local ICD estimated from Google Maps linework.
Sacramento, CA
Sacramento Co.
United States 		Breezy Meadow Dr. / Terracina Dr.
(38.65238, -121.50013) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
35.0520 		Other (At-Grade)
Single-Lane 		2007 Year Completed estimated (2006-2007).
Woodland, CA
Yolo Co.
United States 		Miekle Ave. / Galvin Way
(38.65156, -121.73590) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
26.1162 		Other (At-Grade)
Single-Lane 		2006 Previously controlled by new ICD estimated from Google Maps linework.
Montemor-o-Novo, Évora
Montemor-O-Novo
Portugal 		N2-N4 (Avenida Gago Coutinho) / N114
(38.65008, -8.21972) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Woodland, CA
Yolo Co.
United States 		Hunt St. / Heritage Pkwy.
(38.64945, -121.74580) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2019 Year Completed estimated (2018-2020).
Woodland, CA
Yolo Co.
United States 		Campos Ave. / Mack Way / Shoemaker Ct.
(38.64920, -121.73140) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.1843 		Other (At-Grade)
Single-Lane 		2007 Functional Class: Local ICD estimated from Google Maps linework.
Montemor-o-Novo, Évora
Montemor-O-Novo
Portugal 		N4 (Rota Historica - Avenida Gago Coutinho) / N114 (Rota Historica) / Rua das Oficinas
(38.64606, -8.20143) 		Roundabout
Existing 		All-Way Yield
None 		5 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane, unspecified)
Woodland, CA
Yolo Co.
United States 		Promenade Dr. / Somerset Cir.
(38.64501, -121.73150) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
31.7154 		Other (At-Grade)
Single-Lane 		2007 Functional Class: Local ICD estimated from Google Maps linework.
Woodland, CA
Yolo Co.
United States 		Parkland Ave. / Marston Dr.
(38.64459, -121.74446) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
27.0515 		Other (At-Grade)
Single-Lane 		2015 ICD estimated from Google Maps linework.
Caseyville, IL
St. Clair Co.
United States 		George E Chance Pkwy. / Blackwood Ridge / Boreal Ridge
(38.64452, -89.99106) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2007 Year Completed estimated (2007-2008).
Woodland, CA
Yolo Co.
United States 		Miekle Ave. / Marston Dr.
(38.64444, -121.73614) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
25.1860 		Other (At-Grade)
Single-Lane 		2011 ICD estimated from Google Maps linework.
Caseyville, IL
St. Clair Co.
United States 		George E Chance Pkwy. / (future road) / (parking)
(38.64435, -89.98704) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2007 Year Completed estimated (2007-2008).
Chesterfield, MO
St. Louis Co.
United States 		Schoettler Valley Dr. / Highcroft Dr.
(38.64415, -90.55331) 		Other
Removed 		Unknown
Unknown 		4 Approaches
0 Driveways
17.7235 		Other (At-Grade)
Single-Lane 		1999 Temporary roundabout installed in Fall 1999. Removed September 25, 2000 due to negative public opinion. Intersection returned to AWSC. Functional Class: Local ICD estimated from Google Maps linework.
Saint Charles, MD
Charles Co.
United States 		Lexington Dr. / Montpelier Dr.
(38.64225, -76.96877) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Corroios, Setúbal
Seixal
Portugal 		Rua do Rouxinol / Rua da Igreja / Avenida Baía Natural do Seixal Ramps
(38.64207, -9.14887) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified)
Caseyville, IL
St. Clair Co.
United States 		George E Chance Pkwy. / Villa Valley / Donner Ridge
(38.64193, -90.00523) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2007 Year Completed estimated (2007-2008).
Saint Charles, MD
Charles Co.
United States 		Radford St. / Montpelier Dr.
(38.64135, -76.97106) 		Other
Existing 		Unknown
Unknown 		3 Approaches
4 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Pedestrian access to central island.
Woodland, CA
Yolo Co.
United States 		Road 25A / Parkland Ave.
(38.64099, -121.74450) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
32.0040 		Other (At-Grade)
Single-Lane 		2020
Woodland, CA
Yolo Co.
United States 		Road 25A / Miekle Ave.
(38.64078, -121.73624) 		Roundabout
Existing 		All-Way Yield
None 		2 Approaches
0 Driveways
32.0040 		Other (At-Grade)
Single-Lane 		2021 Year Completed estimated (2020-2021).
Folsom, CA
Sacramento Co.
United States 		Grand Prairie Rd. / Rustic Ridge Dr. / Alder Creek Pkwy
(38.64059, -121.09212) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.0520 		Other (At-Grade)
Single-Lane 		2018 Year Completed estimated (2018-2019).
Corroios, Setúbal
Seixal
Portugal 		N10 (Avenida 25 de Abril) / CM1013 / Av Arsenal do Alfeite
(38.63997, -9.15016) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane, unspecified)
Costa de Caparica, Setúbal
Almada
Portugal 		N10-1 (Avenida de Dom Sebastião) / Rua Engenheiro Henrique Mendia
(38.63925, -9.23049) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Lyndon, KS
Osage Co.
United States 		US 75 / K-31 / K-268
(38.63773, -95.68464) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
54.1083 		Other (At-Grade)
Single-Lane 		2014 ICD estimated from Google Maps linework.
Caseyville, IL
St. Clair Co.
United States 		George E Chance Pkwy. / Laurel Flats Dr. / (future roads)
(38.63746, -90.00941) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2007 Year Completed estimated (2007-2008).
Sacramento, CA
Sacramento Co.
United States 		Promenade Cir. / (unknown)
(38.63732, -121.49950) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
34.5175 		Other (At-Grade)
Single-Lane 		2006 Inside commercial/office park. ICD estimated from Google Maps linework.
St Louis, MO
St. Louis Co.
United States 		N Forty Dr. / I-64-US 40 WB Ramps
(38.63631, -90.41822) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
50.3777 		Freeway Ramps (Grade-Separated)
Single-Lane 		2009 Frontage road connection replaced direct connection to S Spoede Rd. ICD estimated from Google Maps linework.
Folsom, CA
Sacramento Co.
United States 		Grand Prairie Rd. / Rustic Ridge Dr.
(38.63617, -121.09165) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.0520 		Other (At-Grade)
Single-Lane 		2018 Year Completed estimated (2018-2019).
Waldorf, MD
Charles Co.
United States 		Davis Rd. / (School entrance)
(38.63609, -76.97873) 		Roundabout
Existing 		All-Way Yield
None 		2 Approaches
1 Driveways
33.5852 		Other (At-Grade)
Single-Lane 		2005 Functional Class: Local ICD estimated from Google Maps linework.
Town and Country, MO
St. Louis Co.
United States 		MO 141 SB Ramps / Woods Mill Rd.
(38.63523, -90.51449) 		Roundabout
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
38.2503 		Other (At-Grade)
Single-Lane 		2002 Previously controlled by one-way stop ICD estimated from Google Maps linework.
Sacramento, CA
Sacramento Co.
United States 		Fong Ranch Rd. / Bridgegate Dr.
(38.63510, -121.49340) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2019 Year Completed estimated (2018-2020).
St Louis, MO
St. Louis Co.
United States 		S Forty Rd. / I-64-US 40 EB Ramps
(38.63496, -90.41724) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
48.5127 		Freeway Ramps (Grade-Separated)
Single-Lane 		2009 Frontage road connection replaced direct connection to S Spoede Rd. ICD estimated from Google Maps linework.
Forest Park, MO
St. Louis City Co.
United States 		Concourse Dr. / Washington Dr.
(38.63495, -90.28480) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
23.3234 		Other (At-Grade)
Single-Lane 		2009 ICD estimated from Google Maps linework.
Forest Park, MO
St. Louis City Co.
United States 		Government Dr. / Wells Dr.
(38.63437, -90.30113) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
44.7814 		Other (At-Grade)
Single-Lane 		2016 ICD estimated from Google Maps linework.
St Louis, MO
St. Louis City Co.
United States 		McKinley Dr. / Wells Dr.
(38.63354, -90.28072) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
49.4467 		Other (At-Grade)
Single-Lane 		2008 Converted from traffic circle in 2007-2008. Previous circle had on-street parking in circulatory roadway. ICD estimated from Google Maps linework.
Forest Park, MO
St. Louis City Co.
United States 		Hampton Ave. / Concourse Dr. / Wells Dr.
(38.63316, -90.28546) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
31.7207 		Other (At-Grade)
Single-Lane 		2009 Right-turn bypass lane merge in crosswalk area. ICD estimated from Google Maps linework.
East St Louis, IL
St. Clair Co.
United States 		N 9th St. / Baugh Ave. / I-70 EB Onramp
(38.63197, -90.14187) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
33.5871 		Freeway Ramps (Grade-Separated)
Single-Lane 		2012 ICD estimated from Google Maps linework.
Pinhal Novo, Setúbal
Palmela
Portugal 		Praça da Indepedência / Rua El Rei Dom Sancho I / Rua António Sérgio
(38.63156, -8.91099) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Pinhal Novo, Setúbal
Palmela
Portugal 		N252 (Rua Luís de Camões - Avenida dos Ferroviários) / Rua Guerra Junqueiro
(38.63135, -8.91769) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Woodbridge, VA
Prince William Co.
United States 		Potomac Branch Dr. / Oberlin Dr. / Barkham Dr. / Weeburn Way / Cadbury Way
(38.63114, -77.28082) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
East St Louis, IL
St. Clair Co.
United States 		N 9th St. / St Clair Ave.
(38.63094, -90.14386) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
37.3196 		Other (At-Grade)
Single-Lane 		2013 Right-turn bypass lane on east leg. ICD estimated from Google Maps linework.
St. Louis, MO
St. Louis City Co.
United States 		Tower Grove Ave. / I-64 EB Off-Ramp
(38.63045, -90.25538) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
33.5879 		Freeway Ramps (Grade-Separated)
Single-Lane 		2014 ICD estimated from Google Maps linework.
Saint Charles, MD
Charles Co.
United States 		Ethridge Dr. / Nobility Ct.
(38.62769, -76.96461) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter island on north and east legs.
Sacramento, CA
Sacramento Co.
United States 		San Juan Rd. / Azevedo Dr.
(38.62740, -121.50840) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
26.1250 		Other (At-Grade)
Single-Lane 		2004 Constructed using asphalt curbs without reconstructing original curb/gutter/sidewalk. Tactile guide strips in crosswalks. Previously controlled by two-way stop ICD estimated from Google Maps linework.
East St Louis, IL
St. Clair Co.
United States 		N 18th St. / Baugh Ave. / I-64 WB Ramps
(38.62540, -90.13455) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
28.9249 		Freeway Ramps (Grade-Separated)
Single-Lane 		2010 ICD estimated from Google Maps linework.
Long Neck, DE
Sussex Co.
United States 		Shoreview Blvd. / (parking)
(38.62526, -75.18077) 		Other
Existing 		Unknown
Unknown 		2 Approaches
2 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Huntingtown, MD
Calvert Co.
United States 		Barberry Dr. / Spears Rd. / Blueberry Ct.
(38.62290, -76.59347) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Pedestrian access to central island.
Paola, KS
Miami Co.
United States 		K-68 / Old Kansas City Rd. / Hedge Ln.
(38.62133, -94.85551) 		Roundabout
Existing 		All-Way Yield
None 		5 Approaches
0 Driveways
44.7895 		Other (At-Grade)
Single-Lane 		2001 First roundabout on rural, high-speed facility in Kansas. Functional Class: Arterial ICD estimated from Google Maps linework.
St. Louis, MO
St. Louis City Co.
United States 		Gratiot St. / S 13th St.
(38.62104, -90.20242) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
33.5923 		Other (At-Grade)
Single-Lane 		No splitter islands. ICD estimated from Google Maps linework.
Pinhal Novo, Setúbal
Palmela
Portugal 		N252 (Rua José Afonso - Avenida dos Ferroviários) / Rua José Afonso
(38.61814, -8.91773) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
O'Fallon, IL
St. Clair Co.
United States 		Milburn School Rd. / Old Collinsville Rd.
(38.61444, -89.96636) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
31.7290 		Other (At-Grade)
Single-Lane 		2018 ICD estimated from Google Maps linework.
O'Fallon, IL
St. Clair Co.
United States 		Milburn School Rd. / Merriam Pkwy. / Milburn Estates Dr.
(38.61429, -89.94506) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.1966 		Other (At-Grade)
Single-Lane 		2012 ICD estimated from Google Maps linework.
Folsom, CA
Sacramento Co.
United States 		Prairie City Rd. / Scott Rd.
(38.61225, -121.14817) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2023 https://www.facebook.com/CityofFolsom/videos/6294236023941862/
Millsboro, DE
Sussex Co.
United States 		Peninsula Esplanade / N Nicklaus Ave. / S Nicklaus Ave.
(38.61209, -75.17355) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
O'Fallon, IL
St. Clair Co.
United States 		Simmons Rd. / Milburn School Rd. / Fairwood Hills Rd.
(38.61146, -89.92906) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
44.7957 		Other (At-Grade)
Single-Lane 		2016 ICD estimated from Google Maps linework.
O'Fallon, IL
St. Clair Co.
United States 		Milburn Estates Dr. / Portsmith Place Dr.
(38.61138, -89.94514) 		Other
Existing 		Uncontrolled
None 		3 Approaches
0 Driveways
55.9947 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Natomas, CA
Sacramento Co.
United States 		Orchard Ln. / W. River Dr.
(38.61135, -121.53004) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
27.4320 		Other (At-Grade)
Single-Lane 		2005
Saint Charles, MD
Charles Co.
United States 		Devongate St. / Malvern St. / Promenade Pl.
(38.61057, -76.93790) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
28.9560 		Other (At-Grade)
Single-Lane 		2009 Crosswalks adjacent to circulatory roadway. Year Completed estimated (2008-2009).
Fairview Heights, IL
St. Clair Co.
United States 		Dunhill Dr. / Northshore Dr.
(38.61012, -89.97116) 		Other
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
31.7309 		Other (At-Grade)
Single-Lane 		2006 No splitter islands. ICD estimated from Google Maps linework.
Huntingtown, MD
Calvert Co.
United States 		Marley Run / Channel Ct. / Plainview Dr.
(38.60911, -76.59709) 		Other
Existing 		Uncontrolled
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Healdsburg, CA
Sonoma Co.
United States 		Healdsburg Ave. / Mill St. / Vine St.
(38.60833, -122.87009) 		Roundabout
Existing 		All-Way Yield
Unknown 		5 Approaches
0 Driveways
36.3981 		Other (At-Grade)
Single-Lane 		2018 At-grade railroad crossing through central island. ICD estimated from Google Maps linework.
Millsboro, DE
Sussex Co.
United States 		Sterling Blvd. / Peninsula Esplanade
(38.60821, -75.16426) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Potomac Heights, MD
Charles Co.
United States 		Cedar Ln. / Glymont Rd. / Greenwood Pl.
(38.60764, -77.14063) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Saint Charles, MD
Charles Co.
United States 		Middletown Rd. / Billingsley Rd.
(38.60721, -76.97561) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
53.3400 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2019 https://www.charlescountymd.gov/our-county/infrastructure/traffic-signal-projects/middletown-road-billingsley-road-roundabout